CN112805799A - Method for connecting electric components - Google Patents
Method for connecting electric components Download PDFInfo
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- CN112805799A CN112805799A CN201980065995.0A CN201980065995A CN112805799A CN 112805799 A CN112805799 A CN 112805799A CN 201980065995 A CN201980065995 A CN 201980065995A CN 112805799 A CN112805799 A CN 112805799A
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- 238000003825 pressing Methods 0.000 description 36
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- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
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- 239000003990 capacitor Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
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- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004092 self-diagnosis Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
- H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
- H01H37/043—Mountings on controlled apparatus
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
- H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
A method for connecting an electric component (20) to a switch unit (10), the switch unit (10) comprising: a fixed contact (11a) as an example of the 1 st contact; a 1 st terminal (12) connected to the fixed contact (11a) and exposed to the outside of the switch unit (10); a movable contact (11b) as an example of the 2 nd contact, which is movable to a position in contact with the fixed contact (11a) and a position separated from the fixed contact (11 a); and a 2 nd terminal (13) connected to the movable contact (11b) and exposed to the outside of the switch unit (10), wherein an electric element (20) is connected in parallel to the fixed contact (11a) and the movable contact (11b) between the 1 st terminal (12) and the 2 nd terminal (13).
Description
Technical Field
The present invention relates to a method of connecting an electric element to a switch unit.
Background
In a conventional switch such as a temperature switch that senses a temperature change and cuts off a current, it is difficult to connect an electric element in parallel with a contact portion because the switch hinders the guarantee and evaluation of cutting performance (see, for example, patent documents 1 and 2).
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 6163889
Patent document 1: japanese patent laid-open publication No. 2015-103336
Disclosure of Invention
Problems to be solved by the invention
However, when the switch has a plurality of electrical ratings, performance assurance under the maximum condition is a condition for connecting the electrical component in parallel with the contact portion of the switch, and the withstand voltage between the contacts of the switch is also applied to the electrical component connected in parallel. Therefore, the electric components incorporated therein are also subject to evaluation of the insulation distance, and it is difficult to incorporate the electric components into the switch. In addition, in the contact structure that is opened at room temperature, it is necessary to consider that the maximum rated voltage is always applied to the electric element, and it is necessary to cope with withstand voltage of the component, special inspection, size enlargement, and the like, which is a serious problem in terms of price.
The invention aims to provide a method for connecting an electric element, which can simply connect the electric element and a switch part.
Means for solving the problems
In one aspect, a method of connecting an electric element is a method of connecting an electric element to a switch unit, the switch unit including: a 1 st contact; a 1 st terminal connected to the 1 st contact and exposed to the outside of the switch unit; a 2 nd contact movable to a position in contact with the 1 st contact and a position separated from the 1 st contact; and a 2 nd terminal connected to the 2 nd contact and exposed to the outside of the switch unit, wherein the electric element is connected in parallel to the 1 st contact and the 2 nd contact between the 1 st terminal and the 2 nd terminal.
Effects of the invention
According to the above aspect, the electrical component can be easily connected to the switch unit.
Drawings
Fig. 1 is a perspective view showing a switch unit connected to an electric element according to embodiment 1.
Fig. 2 is a sectional view (1) for explaining a method of connecting electric components according to embodiment 1.
Fig. 3 is a sectional view (2) for explaining a method of connecting electric components according to embodiment 1.
Fig. 4 is a cross-sectional view (1) for explaining a method of connecting electric elements according to a modification of embodiment 1.
Fig. 5 is a cross-sectional view (2) for explaining a method of connecting electric elements according to a modification of embodiment 1.
Fig. 6 is a perspective view for explaining a method of connecting electric components according to embodiment 2.
Fig. 7 is a sectional view (1) for explaining a method of connecting electric components according to embodiment 2.
Fig. 8 is a sectional view (2) for explaining a method of connecting electric components according to embodiment 2.
Fig. 9 is an exploded perspective view for explaining a method of connecting electric components according to embodiment 2.
Fig. 10 is a perspective view showing the 1 st plate spring of embodiment 2.
Fig. 11 is a circuit diagram for explaining a modification of embodiment 2.
Detailed Description
Hereinafter, a method for connecting electric components according to embodiment 1 and embodiment 2 of the present invention will be described with reference to the drawings.
< embodiment 1 >
Fig. 1 is a perspective view showing a switch unit 10 connected to an electric element 20 according to embodiment 1.
Fig. 2 and 3 are cross-sectional views for explaining a method of connecting the electric element 20 according to embodiment 1.
The switch unit 10 shown in fig. 1 to 3 includes a switch main body 11, a 1 st terminal 12, a 2 nd terminal 13, and an insulating case 14. The switch unit 10 is, for example, a temperature switch. The switch unit 10 is not limited to a temperature switch, and may be, for example, an electric relay driven by an external control voltage, a controller operated in accordance with changes in various physical quantities, a manually operated switch, or the like.
As shown in fig. 3, the switch main body 11 includes a fixed contact 11a as an example of a 1 st contact, a movable contact 11b as an example of a 2 nd contact, a bimetal element 11c, and an elastic plate 11 d.
Fixed contact 11a is disposed on the bottom surface side of movable contact 11 b. The fixed contact 11a may be disposed on a resin base or the like. Movable contact 11b is located at a position separated from fixed contact 11a at normal temperature so that fixed contact 11a and movable contact 11b are in a contact-off state at normal temperature.
The bimetal element 11c is formed by, for example, bonding two flat plate-like alloys having different thermal expansion coefficients. The bimetal element 11c is held by the elastic plate 11 d. Movable contact 11b is fixed to elastic plate 11 d.
When the bimetal element 11c exceeds the set temperature, it is warped in the opposite direction, and the elastic plate 11d is bent, whereby the movable contact 11b is brought into contact with the fixed contact 11 a. In this way, the bimetal element 11c is a thermally actuated element whose warping direction is reversed with the set temperature as a limit.
The elastic plate 11d itself or the terminal material on the fixed contact 11a side can be formed using a resistive material (for example, stainless steel). Stainless steel is a material that is also used as a spring, but has a large inherent resistance. By using the resistance material for the current-carrying member, when the temperature switch is brought into the contact-on state at an abnormal temperature and the current-carrying is started, the resistance material generates joule heat corresponding to the current-carrying current. As a result, the bimetal element 11c is reversed, and the fixed contact 11a and the movable contact 11b come into contact with each other to establish a contact-on state. Accordingly, when the current flowing through the load such as the LED flows inside the switch unit 10, the temperature drops, and therefore the switch unit 10 is again in the contact-off state at a predetermined temperature. However, since the joule heat is generated inside, the temperature of the bimetal element 11c can be set to a temperature equal to or higher than the temperature at which the contact on state is maintained. This can be adjusted by the current value, the state of the internal resistance, and the recovery temperature.
The confirmation of the electric element 20 may be performed by a multimeter for resistance measurement, or the heat generation due to the energization may be confirmed by a thermal image camera.
The 1 st terminal 12 is connected to the fixed contact 11a and exposed to the outside of the switch unit 10. The 2 nd terminal 13 is connected to the movable contact 11b and exposed to the outside of the switch unit 10.
The 1 st terminal 12 and the 2 nd terminal 13 are provided at their distal ends with pressing portions 12a, 13a, and the pressing portions 12a, 13a are used for connection by pressing the element leads 22, 23 and the external circuit leads 31, 32, which will be described later. In addition, the element leads 22, 23 and the external circuit leads 31, 32 may be connected to the pressing portions 12a, 13a at the same time.
After the pressing, the insulating process of the pressing portions 12a, 13a can be performed by attaching insulating pipes or the like extending to the inside of the insulating housing 14 to the pressing portions 12a, 13 a. The connection between the element leads 22 and 23 and the external circuit leads 31 and 32 and the 1 st and 2 nd terminals 12 and 13 is not limited to press-fitting, and other fixing methods such as welding may be used. Further, after the element leads 22 and 23 and one of the external circuit leads 31 and 32 are connected by soldering, the other may be connected by pressing.
The pressing portions 12a and 13a are U-shaped as shown in fig. 2 before being connected (fixed) to the element leads 22 and 23 and the external circuit leads 31 and 32, and are cylindrical as shown in fig. 1 so as to cover the element leads 22 and 23 and the external circuit leads 31 and 32 after the pressing portions 12a and 13a are pressed by the jig.
The insulating case 14 houses the switch main body 11. The insulating case 14 has a rectangular parallelepiped shape having five surfaces opened on one surface on the side of the external circuit leads 31 and 32.
As shown in fig. 2 and 3, the electric component 20 includes a component main body 21 and component leads 22 and 23 extending from both ends of the component main body 21. The element main body 21 is, for example, a resistor. The power consumption when the contact of the resistor is opened may be 1W or less. In order to suppress heat generation of the electric element 20 when the contact between the fixed contact 11a and the movable contact 11b is opened, specifically, in the case of a 200V power supply, it is preferable that the element body 21 is at least 50k Ω to 100k Ω and the amount of heat generation is as small as possible.
The resistor body is, for example, a positive temperature coefficient thermistor (PTC) or a PTC element having a moisture-proof coating on the surface thereof. Since the PTC requires attention to overvoltage, it is important to select a condition that a voltage not less than 2 times a rated voltage is not applied, a condition of a temperature at which resistance changes, and a resistance value at normal temperature. In the above 200V example, the resistance at normal temperature needs to be set as large as possible, and it is preferable to set the resistance to several tens of k Ω if possible to suppress heat generation when 200V is applied. Since it is a prerequisite that direct current is applied, the PTC is preferably moisture-proof coated.
The element main body 21 may be a diode element such as a constant voltage diode or a light emitting diode. When the element main body 21 is a constant voltage diode, an electric circuit of direct current may be configured as an electric element which does not generate heat under the voltage of the power supply and has a zener voltage higher than the voltage of the power supply.
When the electric element 20 is a rectifying diode, when it is connected in a polarity in which current does not flow when current is applied, it acts as a protection against an abnormal voltage in the electronic circuit, and in particular, it can be said that the LED does not withstand a voltage of opposite polarity, and therefore it can function as a protection element. The connection confirmation can be dealt with by a conduction check of changing polarity or by flowing a current in the forward direction and confirming a forward voltage.
As described above, one element lead wire 22 is connected to the 1 st terminal 12 at the pressed portion 12a, and the other element lead wire 23 is connected to the 2 nd terminal 13 at the pressed portion 13 a. Thus, the electric element 20 is connected in parallel to the fixed contact 11a and the movable contact 11b between the 1 st terminal 12 and the 2 nd terminal 13.
The entire element body 21 and a part of the element leads 22 and 23 may be housed in the insulating case 14 with a space from the switch body 11. A curable filler (e.g., resin) is filled around the element main body 21 (the electric element 20).
As described above, the 1 st external circuit lead 31 connected to the external circuit is connected to the 1 st terminal 12 at the pressing portion 12 a. As described above, the 2 nd external circuit lead 32 connected to the external circuit is connected to the 2 nd terminal 13 at the pressing portion 13 a.
The external circuit leads 31 and 32 have core wires 31a and 32a and insulating covering portions 31b and 32b covering the core wires 31a and 32 a.
Fig. 4 and 5 are cross-sectional views for explaining a method of connecting the electric element 20 according to a modification of embodiment 1.
The switch main body 41, the 1 st terminal 42 (pressing portion 42a), the 2 nd terminal 43 (pressing portion 43a), and the insulating housing 44 of the switch unit 40 are the same as the switch main body 11, the 1 st terminal 12 (pressing portion 12a), the 2 nd terminal 13 (pressing portion 13a), and the insulating housing 14 of the switch unit 10 shown in fig. 1 to 3 described above.
The insulating plate 45 is disposed between the electric element 20, the 1 st terminal 42, and the 2 nd terminal 43. That is, the electric element 20 is disposed on the opposite side of the 1 st terminal 42 and the 2 nd terminal 43 with the insulating plate 45 interposed therebetween.
The connection of the element leads 22 and 23 and the external circuit leads 31 and 32 to the pressing portions 42a and 43a of the 1 st and 2 nd terminals 42 and 43 is similar to the example shown in fig. 1 to 3.
However, by connecting the electric element 20 in parallel with the fixed contact 11a and the movable contact 11b as in embodiment 1, for example, in a contact-off state in which the fixed contact 11a is separated from the movable contact 11b at normal temperature, the electric element 20 is energized until a contact-on state in which the fixed contact 11a is in contact with the movable contact 11b is achieved. Therefore, when the electric element 20 is a resistor, the resistor generates heat due to its resistance and a current flowing through it. When the switch main body 11 is a temperature switch, if the heating temperature of the resistor is applied to the ambient temperature, the operating point may be affected, but in embodiment 1, the electrical element 20 is connected to the outside of the switch main body 11, so that the bimetal 11c has less influence on the sensed temperature.
Here, in a circuit of an illumination apparatus using an LED, a temperature switch is sometimes required to prevent overheating due to heat generation of an LED element when an ambient temperature is high. When a temperature switch of a normally off type is used for overheat protection of an LED, the block of the LED element is short-circuited by the temperature switch, and a current for lighting the LED is bypassed to the temperature switch side, whereby heat generation of the LED can be stopped. However, in the switch of the normally open type, there is a big problem that whether or not the switch is connected to the circuit cannot be accurately confirmed if the temperature switch is not operated.
In embodiment 1, if the electrical component 20 is assembled at the same time when the external circuit leads 31 and 32 in the customer factory are connected to the completed switch unit 10, connection confirmation can be performed at the time of the connection work. Further, if the resistance value of the electric element 20 can be checked, for example, the final wire connection completion can be checked. In this way, in the switch unit 10 connected to the electric element 20, if both ends are short-circuited at the time of overheat detection of the LED unit, for example, the power supply circuit performs constant current control, and therefore, a current equal to or larger than a predetermined value does not flow. Further, since the LED drive current flows through the inside of the switch unit 10 by using a material having high resistivity for the internal conductive member of the switch unit 10, the inside of the switch unit 10 during energization can be heated, and if the power supply is in the connected state, the temperature can be maintained at or above the recovery temperature of the temperature switch (the temperature at which the contact is recovered to the contact-disconnected state), and the recovery from the energized state is prevented. That is, the contact on state due to abnormal heat generation can be maintained. Further, by cutting off the power supply, the contact can be restored to the contact off state as the initial state.
In addition, in the current path when the switch unit 10 is in the contact-on state, the resistor is connected to the outside of the switch unit 10 so as to have a voltage lower than the sum of the forward voltages of the LED modules, and thus a voltage can be generated in the resistor by a current flowing after the switch unit 10 is in the contact-on state. Therefore, a dimming state in which the LED is weakly turned on can be maintained within a range in which the LED is not turned off, and a risk due to full turn-off can be avoided. At this time, since a current flows through the resistor, a rectifier diode is connected as the electric element 20 in a direction opposite to the LED lighting.
In contrast, in the control device, the switching unit 10 may be positioned to constantly monitor the temperature in addition to the switching operation at the time of abnormality. However, in the normal temperature disconnection type, the contacts are always disconnected and cannot be distinguished from disconnection. In embodiment 1, by connecting the electric element 20 in parallel with the fixed contact 11a and the movable contact 11b, it is possible to confirm that the electric element functions as a monitoring function of the temperature sensor at all times, unlike an operation of turning on the contact and giving an alarm in an abnormal state, for example, by confirming the resistance between the contacts, confirming the potential based on a voltage drop, or detecting the current by some method when the electric element 20 is a resistance element.
In the altitude control device, periodic self-diagnosis is sometimes required, and by connecting the electric element 20, a monitoring function can be always ensured even in the off-type at room temperature.
On the other hand, in the case where the switch unit 10 is of the on type at normal temperature, the contact composed of the fixed contact 11a and the movable contact 11b at normal temperature short-circuits the electric element 20, and therefore there is no change, but even if the switch unit 10 operates and the fixed contact 11a and the movable contact 11b are separated, the electric circuit does not become a completely off state, and therefore the occurrence of a surge can be suppressed. In particular, when the electric element 20 such as a surge arrester having an operating voltage higher than the circuit voltage is connected, a surge unique to an inductive load can be suppressed.
In addition, when the switch unit 10 is mounted on a product that is spread in a planar shape in a use environment other than the inside of a metal case of an electric product, and further, the influence of static electricity easily affects an electric circuit connected to a contact, and particularly, when the operating temperature of the switch unit 10 is low, a contact open state that lasts for a long time due to an environmental condition may be caused, or when the switch unit 10 operates and the contact is in an open state and a power supply is cut off, a high voltage due to static electricity induction may remain between the contacts. Thus, even if a high voltage remains between the contacts, by connecting the electric element 20 in parallel between the contacts, the voltage induced by the static electricity between the contacts can be discharged even if the contacts are in the open state.
In embodiment 1 described above, the method of connecting the electric element 20 is a method of connecting the electric element 20 to the switch unit 10, and the switch unit 10 includes: a fixed contact 11a as an example of the 1 st contact; a 1 st terminal 12 connected to the fixed contact 11a and exposed to the outside of the switch unit 10; a movable contact 11b as an example of the 2 nd contact, which is movable to a position in contact with the fixed contact 11a and a position separated from the fixed contact 11 a; and a 2 nd terminal 13 connected to the movable contact 11b and exposed to the outside of the switch unit 10, and connecting the electric element 20 in parallel with the fixed contact 11a and the movable contact 11b between the 1 st terminal 12 and the 2 nd terminal 13.
In this way, since the 1 st terminal 12 and the 2 nd terminal 13 are exposed to the outside of the switch unit 10, the electric element 20 suitable for the use condition can be easily connected to the completed switch unit 10.
In embodiment 1, the 1 st external circuit lead 31 connected to the external circuit is connected to the 1 st terminal 12 together with one element lead 22 of the electric element 20, and the 2 nd external circuit lead 32 connected to the external circuit is connected to the 2 nd terminal 13 together with the other element lead 23 of the electric element 20. Accordingly, both the element leads 22 and 23 and the external circuit leads 31 and 32 can be connected to the 1 st terminal 12 and the 2 nd terminal 13, and thus the electric element 20 can be connected more easily.
In embodiment 1, the switch unit 10 further includes an insulating case 14, and the insulating case 14 houses the fixed contact 11a and the movable contact 11b, and houses the electric component 20 connected between the 1 st terminal 12 and the 2 nd terminal 13 in the insulating case 14. Therefore, electric element 20 can be connected in parallel to fixed contact 11a and movable contact 11b with a simple configuration.
In embodiment 1, a curable filler is filled around the electric element 20 housed in the insulating case 14. Therefore, the switching section 10 and the electric element 20 can be fixed together with the filler.
In embodiment 1, when the electric element 20 is a resistor having a power consumption of 1W or less, heat generation of the electric element 20 can be suppressed when the contact between the fixed contact 11a and the movable contact 11b is opened.
In embodiment 1, the electric element 20 may be a diode element. For example, when the diode element is a rectifying diode, if the diode element is connected in a polarity in which current does not flow when energized, the diode element functions as a protective element because it acts as a protection against an abnormal voltage in the electronic circuit, and in particular, the LED cannot withstand a voltage of the opposite polarity.
In the modification of embodiment 1, the electric element 20 connected between the 1 st terminal 42 and the 2 nd terminal 43 is arranged on the opposite side of the 1 st terminal 42 and the 2 nd terminal 43 with the insulating plate 45 interposed therebetween. Therefore, the insulation distance reduced by the connection of the electric element 20 can be ensured by the insulation plate 45.
< embodiment 2 >
Fig. 6 is a perspective view for explaining a method of connecting the electric element 61.
Fig. 7 and 8 are cross-sectional views for explaining a connection method of the electric element 61.
Fig. 9 is an exploded perspective view for explaining a method of connecting the electric element 61.
Fig. 10 is a perspective view showing the 1 st plate spring 71.
The switch unit 50 shown in fig. 6 to 9 includes a switch main body 51, a 1 st terminal 52, a 2 nd terminal 53, a 3 rd terminal 54, a 4 th terminal 55, an insulating case 56, and a leaf spring holding member 57. The switch unit 50 constitutes, for example, a temperature switch.
As described in embodiment 1 above, the switch main body 51 shown in fig. 7 to 9 includes, for example: a fixed contact 11a as an example of a 1 st contact, a movable contact 11b as an example of a 2 nd contact, a bimetal element 11c, and an elastic plate 11d shown in fig. 3.
In embodiment 2, the external circuit leads 31 and 32 shown in fig. 1 to 3 are connected to the pressing portions 54a and 55a of the 3 rd terminal 54 and the 4 th terminal 55, respectively, the 3 rd terminal 54 being connected to the fixed contact 11a, and the 4 th terminal 55 being connected to the movable contact 11 b.
The 1 st terminal 52 is connected to the fixed contact 11a and exposed to the outside of the switch unit 50. The 2 nd terminal 53 is connected to the movable contact 11b and exposed to the outside of the switch unit 50. The 1 st terminal 52 and the 2 nd terminal 53 extend from the switch main body 51 to the opposite side of the 3 rd terminal 54 and the 4 th terminal 55.
The insulating case 56 houses the switch main body 51. The insulating case 56 has a rectangular parallelepiped shape having four surfaces opened on the total two surfaces of the 1 st terminal 52 and the 2 nd terminal 53, and the 3 rd terminal 54 and the 4 th terminal 55. The insulating housing 56 is provided with insertion recesses 56a, 56 b. The insertion convex portion 62a of the insulating cover 62 described later is inserted into the insertion concave portions 56a and 56 b.
The leaf spring holding member 57 is an example of an elastic body holding member, and holds a 1 st leaf spring 71 and a 2 nd leaf spring 72, which will be described later.
The electric element unit 60 has an electric element 61 and an insulating cover 62.
The electric element 61 has an element main body 61a and element leads 61b and 61c extending from both ends of the element main body 61 a.
The insulating cover 62 has a rectangular parallelepiped shape formed by five surfaces opened on one surface on the switch unit 50 side. An insertion projection 62a having a smaller wall thickness than the other portions of the insulating cover 62 is provided around the opening of the insulating cover 62 so as to project toward the switch unit 50. As described above, the insertion convex portion 62a is inserted into the insertion concave portions 56a, 56 b.
The 1 st plate spring 71 is an example of a 1 st elastic body that presses one element lead 61b of the electric element 61 against the 1 st terminal 52.
The 2 nd plate spring 72 is an example of a 2 nd elastic body that presses the other element lead 61c of the electric element 61 against the 2 nd terminal 53.
As shown in fig. 10, the 1 st plate spring 71 is a plate-shaped member that is bent so as to be wound around one turn, and a pressing portion 71a that presses the element lead 61b against the 1 st terminal 52 is provided at one end of the 1 st plate spring 71. Further, a notch 71b into which the element lead 61b is inserted is provided at the other end of the 1 st plate spring 71. When the element lead 61b is inserted into the notch 71b, the pressing portion 71a is pushed up by the element lead 61b so as to be separated from the 1 st terminal 52.
In a state where the element lead 61b is inserted into the notch 71b, the pressing portion 71a presses the element lead 61b against the 1 st terminal 52. This pressing also serves to prevent the element lead 61b from coming off or loosening.
As shown in fig. 9, the 2 nd plate spring 72 is also a plate-like member that is bent so as to be wound around one turn, as with the 1 st plate spring 71, and a pressing portion 72a that presses the element lead 61c against the 2 nd terminal 53 is provided at one end of the 2 nd plate spring 72. Further, a notch 72b into which the element lead 61c is inserted is provided at the other end of the 2 nd plate spring 72. When the element lead 61c is inserted into the notch 72b, the pressing portion 72a is pushed up by the element lead 61c so as to be separated from the 2 nd terminal 53.
In a state where the element lead 61c is inserted into the notch 72b, the pressing portion 72a presses the element lead 61c against the 2 nd terminal 53. This pressing also serves to prevent the element lead 61c from coming off, loosening, and the like.
When the electric element 61 is connected between the 1 st terminal 52 and the 2 nd terminal 53, for example, the insulating cover 62 is removed from a state in which the insulating cover 62 in a state in which the electric element 61 is not housed is attached to the insulating case 56, the 1 st leaf spring 71 and the 2 nd leaf spring 72 are housed in the insulating case 56, the electric element 61 is housed in the insulating cover 62 (electric element unit 60), and the electric element unit 60 is attached to the insulating case 56. At this time of mounting, the element leads 61b, 61c of the electric element 61 are inserted into the cutouts 71b, 72b of the leaf springs 71, 72. Then, the element leads 61b, 61c are pressed against the 1 st terminal 52 and the 2 nd terminal 53 by the pressing portions 71a, 72a of the plate springs 71, 72. Thereby, the electric element 60 can be connected in parallel to the switch main body 51 (the fixed contact 11a and the movable contact 11b) between the 1 st terminal 52 and the 2 nd terminal 53.
Further, although the electric element 61 is connected between the 1 st terminal 52 and the 2 nd terminal 53 after the assembly of the switch unit 50 is completed, the electric element may be connected to the 1 st external circuit lead 31 and the 2 nd external circuit lead 32 before or after the connection with the 3 rd terminal 54 and the 4 th terminal 55.
Fig. 11 is a circuit diagram for explaining a modification of embodiment 2.
As shown in fig. 11, when the switch 83 having the 1 st contact and the 2 nd contact is disposed in an external circuit including the power supply 81, the load 82, and the like, a MOSFET (metal-oxide-semiconductor field-effect transistor) 84, a capacitor 85, a resistor 86, and a diode 87 may be disposed in the electric element unit 60 as an example of a plurality of electric elements connected in parallel to the 1 st contact and the 2 nd contact.
A MOSFET 84, which is an example of a Field Effect Transistor (FET), is connected in parallel with the capacitor 85 and the resistor 86, and a diode 87 is connected in parallel with the resistor 86.
When the contact is opened, the gate of the MOSFET 84 is driven using a voltage generated by an arc between the 1 st contact and the 2 nd contact of the switch 83, and when the voltage disappears due to extinction, the MOSFET 84 is also opened, and the disconnection is completed. Thus, when the contact is opened, the current flows to the electric element unit 60 (the plurality of electric elements).
Further, when the semiconductor switch operated by remote operation such as communication is connected to the electric element unit, the off state at normal temperature is temporarily turned on by remote operation at the time of self-diagnosis, and the effectiveness of temperature monitoring can also be confirmed.
In embodiment 2 described above, effects corresponding to the same matters as those in embodiment 1 can be obtained similarly in embodiment 2. For example, in the method of connecting the electric element 61 according to embodiment 2, the electric element 61 is connected in parallel with the fixed contact 11a and the movable contact 11b between the 1 st terminal 52 and the 2 nd terminal 53 exposed to the outside of the switch unit 50. In this way, the 1 st terminal 52 and the 2 nd terminal 53 are exposed to the outside of the switch unit 50, and therefore the electric element 61 suitable for the use condition can be easily connected to the completed switch unit 50.
In embodiment 2, the switch unit 50 includes: a 3 rd terminal 54 connected to a fixed contact 11a as an example of the 1 st contact; and a 4 th terminal 55 connected to the movable contact 11b as an example of the 2 nd contact, the 1 st external circuit lead 31 connected to the external circuit being connected to the 3 rd terminal 54, and the 2 nd external circuit lead 32 connected to the external circuit being connected to the 4 th terminal 55. Thus, the electric element 61 can be connected to the 1 st terminal 52 and the 2 nd terminal 53 using a space around the 1 st terminal 52 and the 2 nd terminal 53 connected to the electric element 61 (for example, a space on the opposite side of the 3 rd terminal 54 and the 4 th terminal 55).
In embodiment 2, one element lead 61b of the electric element 61 is pressed against the 1 st terminal 52 by the 1 st plate spring 71 which is an example of the 1 st elastic body, and the other element lead 61c of the electric element 61 is pressed against the 2 nd terminal 53 by the 2 nd plate spring 72 which is an example of the 2 nd elastic body, whereby the electric element 61 is connected between the 1 st terminal 52 and the 2 nd terminal 53. By using the 1 st and 2 nd leaf springs 71 and 72 in this way, connection work such as pressing and welding can be omitted, and the electric element 61 can be easily connected between the 1 st and 2 nd terminals 52 and 53.
In embodiment 2, the switch unit 50 further includes an insulating case 56, the insulating case 56 houses the 1 st contact (fixed contact 11a) and the 2 nd contact (movable contact 11b), and the electric component unit 60 housing the electric component 61 is attached to the insulating case 56, whereby the electric component 61 is connected between the 1 st terminal 52 and the 2 nd terminal 53. Thus, the electric element 61 can be connected between the 1 st terminal 52 and the 2 nd terminal 53 by a simple operation of mounting the electric element unit 60 on the insulating case 56.
In the modification of embodiment 2, the electric element unit includes a MOSFET 84, a capacitor 85, a resistor 86, and a diode 87 as an example of a plurality of electric elements through which a current flows when the contact of the switch unit 83 is opened. Thus, for example, the gate of the MOSFET 84 as an electric element is driven by a voltage generated by an arc between contacts, and when the voltage disappears due to extinction of the arc, the MOSFET 84 is also turned off, and disconnection can be completed.
Although the embodiments 1 and 2 of the present invention have been described above, the present invention is included in the scope of the invention described in the claims and the equivalents thereof. Hereinafter, the invention described in the original claims of the present application is described.
[ additional notes 1]
A method for connecting an electric component to a switching unit, the switching unit comprising:
a 1 st contact;
a 1 st terminal connected to the 1 st contact and exposed to the outside of the switch unit;
a 2 nd contact movable to a position in contact with the 1 st contact and a position separated from the 1 st contact; and
a 2 nd terminal connected to the 2 nd contact and exposed to the outside of the switch unit,
it is characterized in that the preparation method is characterized in that,
connecting the electrical element in parallel with the 1 st and 2 nd contacts between the 1 st and 2 nd terminals.
[ appendix 2]
The method of connecting electric components according to claim 1, wherein the step of connecting the electric components to the circuit board,
a1 st external circuit lead connected to an external circuit is connected to the 1 st terminal together with one element lead of the electric element, and a 2 nd external circuit lead connected to the external circuit is connected to the 2 nd terminal together with the other element lead of the electric element.
[ additional notes 3]
The method of connecting electric components according to claim 1 or 2, wherein the step of connecting the electric components to the circuit board,
the switch unit further includes an insulating housing that houses the 1 st contact and the 2 nd contact,
receiving the electrical component connected between the 1 st terminal and the 2 nd terminal in the insulating case.
[ additional notes 4]
The method of connecting electric components according to claim 3, wherein the step of connecting the electric components to the circuit board,
a curable filler is filled around the electric element housed in the insulating case.
[ additional notes 5]
The method of connecting an electric component according to any one of notes 1 to 4, wherein the step of connecting the electric component to the electronic component is performed,
the electrical component connected between the 1 st terminal and the 2 nd terminal is arranged on the opposite side of the 1 st terminal and the 2 nd terminal with an insulating plate interposed therebetween.
[ additional notes 6]
The method of connecting electric components according to claim 1, wherein the step of connecting the electric components to the circuit board,
the switch unit further includes: a 3 rd terminal connected to the 1 st contact; and a 4 th terminal connected to the 2 nd contact,
a1 st external circuit lead connected to an external circuit is connected to the 3 rd terminal, and a 2 nd external circuit lead connected to the external circuit is connected to the 4 th terminal.
[ additional notes 7]
The method of connecting electric components according to claim 6, wherein the step of connecting the electric components to the circuit board,
one element lead of the electric element is pressed to the 1 st terminal by a 1 st elastic body, and the other element lead of the electric element is pressed to the 2 nd terminal by a 2 nd elastic body, thereby connecting the electric element between the 1 st terminal and the 2 nd terminal.
[ additional notes 8]
The method of connecting electric components according to claim 6 or 7,
the switch unit further includes an insulating housing that houses the 1 st contact and the 2 nd contact,
and mounting an electric component unit in which the electric component is housed in the insulating housing, thereby connecting the electric component between the 1 st terminal and the 2 nd terminal.
[ appendix 9]
The method of connecting electric components according to claim 8, wherein the step of connecting the electric components to the circuit board,
the electric element unit includes a plurality of electric elements for converting a current when the contact of the switch unit is opened.
[ appendix 10]
The method of connecting an electric component according to any one of notes 1 to 9, wherein the step of connecting the electric component to the electronic component is performed,
the electric element is a resistor body,
the power consumption of the resistor is 1W or less.
[ appendix 11]
The method of connecting an electric component according to any one of notes 1 to 9, wherein the step of connecting the electric component to the electronic component is performed,
the electrical element is a diode element.
Description of the reference symbols
10: a switch section; 11: a switch main body; 11 a: fixing the contact; 11 b: a movable contact; 11 c: a bimetallic element; 11 d: an elastic plate; 12: a 1 st terminal; 12 a: a pressing part; 13: a 2 nd terminal; 13 a: a pressing part; 14 an insulating housing; 20: an electrical component; 21: an element main body; 22. 23: an element lead; 31: 1 st external circuit lead; 31 a: a core wire; 31 b: a covering part; 32: 2 nd external circuit lead; 32 a: a core wire; 32 b: a covering part; 40: a switch section; 41: a switch main body; 42: a 1 st terminal; 42 a: a pressing part; 43: a 2 nd terminal; 43 a: a pressing part; 44: an insulating housing; 45: an insulating plate; 50: a switch section; 51: a switch main body; 52: a 1 st terminal; 53: a 2 nd terminal; 54: a 3 rd terminal; 54 a: a pressing part; 55: a 4 th terminal; 55 a: a pressing part; 56: an insulating housing; 56a, 56 b: an insertion recess; 57: a plate spring holding member; 60: an electric element unit; 61: an electrical component; 61 a: an element main body; 61b, 61 c: an element lead; 62: an insulating cover; 62 a: inserting the convex part; 62 b: a stopper; 71: a 1 st plate spring; 71 a: a pressing part; 71 b: cutting; 72: a 2 nd plate spring; 72 a: a pressing part; 72 b: cutting; 81: a power source; 82: a load; 83: a switch section; 84: a MOSFET; 85: a capacitor; 86: a resistance; 87: and a diode.
Claims (11)
1. A method for connecting an electric component to a switching unit, the switching unit comprising:
a 1 st contact;
a 1 st terminal connected to the 1 st contact and exposed to the outside of the switch unit;
a 2 nd contact movable to a position in contact with the 1 st contact and a position separated from the 1 st contact; and
a 2 nd terminal connected to the 2 nd contact and exposed to the outside of the switch unit,
it is characterized in that the preparation method is characterized in that,
connecting the electrical element in parallel with the 1 st and 2 nd contacts between the 1 st and 2 nd terminals.
2. The method of connecting electric components according to claim 1,
a1 st external circuit lead connected to an external circuit is connected to the 1 st terminal together with one element lead of the electric element, and a 2 nd external circuit lead connected to the external circuit is connected to the 2 nd terminal together with the other element lead of the electric element.
3. The method of connecting electric components according to claim 1,
the switch unit further includes an insulating housing that houses the 1 st contact and the 2 nd contact,
receiving the electrical component connected between the 1 st terminal and the 2 nd terminal in the insulating case.
4. The method of connecting electric components according to claim 3,
a curable filler is filled around the electric element housed in the insulating case.
5. The method of connecting electric components according to claim 1,
the electrical component connected between the 1 st terminal and the 2 nd terminal is arranged on the opposite side of the 1 st terminal and the 2 nd terminal with an insulating plate interposed therebetween.
6. The method of connecting electric components according to claim 1,
the switch unit further includes:
a 3 rd terminal connected to the 1 st contact; and
a 4 th terminal connected to the 2 nd contact,
a1 st external circuit lead connected to an external circuit is connected to the 3 rd terminal, and a 2 nd external circuit lead connected to the external circuit is connected to the 4 th terminal.
7. The method of connecting electric components according to claim 6,
one element lead of the electric element is pressed to the 1 st terminal by a 1 st elastic body, and the other element lead of the electric element is pressed to the 2 nd terminal by a 2 nd elastic body, thereby connecting the electric element between the 1 st terminal and the 2 nd terminal.
8. The method of connecting electric components according to claim 6,
the switch unit further includes an insulating housing that houses the 1 st contact and the 2 nd contact,
and mounting an electric component unit in which the electric component is housed in the insulating housing, thereby connecting the electric component between the 1 st terminal and the 2 nd terminal.
9. The method of connecting electric components according to claim 8,
the electric element unit includes a plurality of electric elements for converting a current when the contact of the switch unit is opened.
10. The method of connecting electric components according to claim 1,
the electric element is a resistor body,
the power consumption of the resistor is 1W or less.
11. The method of connecting electric components according to claim 1,
the electrical element is a diode element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-196632 | 2018-10-18 | ||
| JP2018196632 | 2018-10-18 | ||
| PCT/JP2019/028866 WO2020079908A1 (en) | 2018-10-18 | 2019-07-23 | Method for connecting electric element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112805799A true CN112805799A (en) | 2021-05-14 |
| CN112805799B CN112805799B (en) | 2025-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201980065995.0A Active CN112805799B (en) | 2018-10-18 | 2019-07-23 | Connection methods of electrical components |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11875958B2 (en) |
| JP (1) | JP7491575B2 (en) |
| CN (1) | CN112805799B (en) |
| DE (1) | DE112019005212T5 (en) |
| WO (1) | WO2020079908A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11532442B2 (en) * | 2018-06-27 | 2022-12-20 | Uchiya Thermostat Co., Ltd. | Electronic device with case having sheath-piercing tapered sections |
| JP2022129855A (en) * | 2021-02-25 | 2022-09-06 | いすゞ自動車株式会社 | Disconnection detector and controller |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112805799B (en) | 2025-03-07 |
| US11875958B2 (en) | 2024-01-16 |
| WO2020079908A1 (en) | 2020-04-23 |
| JPWO2020079908A1 (en) | 2021-09-24 |
| JP7491575B2 (en) | 2024-05-28 |
| DE112019005212T5 (en) | 2021-07-08 |
| US20210391131A1 (en) | 2021-12-16 |
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